Jaycar Micro 30A Horn Relay – 12V SPST Automotive Relay for Air Horns & Fog Lamps (SY4045)

Your horn button's been chattering, or your fog-lamp switch keeps burning out because it's carrying 30 A of load through a contact not built for it. This Jaycar micro relay takes that current off the switch and puts it where it belongs – on a contact rated for the job. Sits in a 22 × 15 mm footprint, so it tucks behind a dash panel or into a wiring loom without eating space. 12 V DC, 30 A, single-pole single-throw. Wire it in, secure the mount, done

• 22 × 15 mm footprint – fits where a standard relay won't
• 12 V DC, 30 A contact rating for air horns, fog lamps, and driving lights
• Single-pole single-throw (SPST) – simple two-wire switch replacement
• Automotive-grade contacts built for repeated high-current cycling
• Compact enough to hide behind a dash or inside a wiring harness